2. Signaling Pathways
  3. MAPK/ERK Pathway
  4. p38 MAPK

p38 MAPK

p38 MAPK

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The p38 MAPK family consists of highly conserved proline-directed serine-threonine protein kinases that are activated in response to a number many growth factors, cytokines, and chemotactic substances, such as vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF), PDGF, TNF, interleukins, lipopolysaccharide (LPS) and formyl-methionyl-leucyl-phenylalanine (fMLP). It is well known that p38 is involved in inflammation, apoptosis, cardiomyocyte hypertrophy and cell differentiation.

The p38 MAPK family is composed of four proteins: p38α (encoded by the gene Mapk14), p38β (Mapk11), p38γ (Mapk12), and p38δ (Mapk13). Their coding genes have a distinct tissue distribution and they appear differentially expressed, being Mapk14 the most highly expressed. p38 MAPKs are substrates for three MAP2K (MKK6, MKK3, and MKK4). The contribution of each of these MAP2K to p38 MAPKs activation depends on the stimulus and the cell type. The MAP3Ks that lead to p38 MAPKs activation are ASK1, DLK1, TAK1, TAO1, TAO2, TPL2, MLK3, MEKK3, MEKK4, and ZAK1.

p38 MAPK Isoform Specific Products:

p38 MAPK Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-14654B
    Aspirin DL-lysine
    		Activator
    Aspirin DL-lysine (ASA DL-lysine) is a lysine-containing aspirin derivative. Aspirin DL-lysine inhibits cyclooxygenase (COX) in platelets, blocks the synthesis of thromboxane A2 (TXA2), and thus inhibits platelet aggregation and activation. Aspirin DL-lysine can be used to study thrombin generation in patients with unstable angina pectoris.
    Aspirin DL-lysine
  • HY-169100
    Antiproliferative agent-57
    Antiproliferative agent-57 (compound M2) is a tumor angiogenesis inhibitor. Antiproliferative agent-57 inhibits the secretion of VEGF in SiHa cells under hypoxic conditions (IC50=0.68 μM) without inducing cytotoxicity. Antiproliferative agent-57 can modulate the PI3K/AKT/mTOR and MAPK signaling pathways in tumor cells to inhibit the expression of HIF-1α and VEGF in tumor tissues.
    Antiproliferative agent-57
  • HY-178497
    ZJK-807
    ZJK-807 is a highly effective and selective PROTAC degrader targeting KRASG12D (DC50 = 79.5 nM in AsPC-1 cells). ZJK-807 shows minimal impact on wild-type KRAS or other mutants (G12C/S/V, G13D), inducing mutant-specific cytotoxicity. ZJK-807 suppresses RAS/MAPK signaling and uniquely modulates TNF signaling and eukaryotic ribosome biogenesis. ZJK-807 can be used for the study of KRAS-driven pancreatic cancer. Yellow: KRASG12D ligand (HY-W087383); Green: E3 ligase CRBN ligand (HY-178507); Black: Linker (HY-178506).
    ZJK-807
  • HY-N18209
    4-Hydroxy-3-butylphthalide
    4-Hydroxy-3-butylphthalide is a Phthalide (HY-W015820) derivative found in the rhizome of Ligusticum ChuanXiong Hort. 4-Hydroxy-3-butylphthalide binds core targets linked to lung cancer brain metastasis, such as BDNF, FOS, and MAPK14. 4-Hydroxy-3-butylphthalide can be used for the research of lung cancer brain metastasis.
    4-Hydroxy-3-butylphthalide
  • HY-B1014S1
    Acenocoumarol-d4
    		Inhibitor
    Acenocoumarol-d4 is deuterium labeled Acenocoumarol (HY-B1014). Acenocoumarol is an anticoagulant that functions as a Vitamin K antagonist. Acenocoumarol inhibits MAPK/ERK/JNK signaling pathway, reduces the nuclear translocation of NF-κB p65, activates Akt/GSK3β signaling pathway. Acenocoumarol induces apoptosis in cell A549, arrests cell cycle at S phase.
    Acenocoumarol-d<sub>4</sub>
  • HY-182103
    ZAK-IN-2
    		Inhibitor
    ZAK-IN-2 (Compound 8) is a selective, covalent ZAK inhibitor with an IC50 of 11.5 nM. ZAK-IN-2 forms a covalent bond with Cys22 in the P-loop of ZAK to inhibit its kinase activity. ZAK-IN-2 inhibits the phosphorylation of the downstream target p38. ZAK-IN-2 blocks Doxorubicin (HY-15142A)-induced cleavage of Caspase 3. ZAK-IN-2 is applicable to research related to myocardial hypertrophy.
    ZAK-IN-2
  • HY-171096
    PAR2 modulator-1
    		Inhibitor
    PAR2 modulator-1 (Compound C781) is a protease activated receptor type 2 (PAR2) antagonist. PAR2 modulator-1 can specifically inhibit the PAR2-dependent MAPK signaling pathway with an IC50 value of 8.5 μM. PAR2 modulator-1 can block the pain response triggered by PAR2 agonists. PAR2 modulator-1 can be used for the researches of inflammation, immunology and neurological disease, such as chronic pain and asthma.
    PAR2 modulator-1
  • HY-P11242
    Cm-CATH2
    		Inhibitor
    Cm-CATH2 is an antimicrobial peptide discovered from Chelonia mydas. Cm-CATH2 has a potent, broad-spectrum and rapid bactericidal ability by rapidly destroying the integrity of bacterial cell membranes. It shows strong activity against Gram-positive bacteria (such as VREF, Staphylococcus aureus), Gram-negative bacteria (such as Escherichia coli, Klebsiella pneumoniae), and fungi (such as Candida albicans) with MICs ranges from 1.17 to 18.75 μg/mL. Cm-CATH2 is also effective against various aquatic pathogenic bacteria. Cm-CATH2 not only inhibits biofilm formation but can also remove the formed biofilms. Cm-CATH2 has immunomodulatory functions and chemotactic effects on immune cells, and can inhibit the production of pro-inflammatory cytokines by macrophages stimulated by LPS (HY-D1056). Cm-CATH2 prevents the activation of NF-κB by inhibiting the degradation of IκBα, and also inhibits the phosphorylation of MAPK signaling pathways (p38, JNK, ERK). Cm-CATH2 demonstrates strong anti-infective ability in mouse peritonitis models and pneumonia models.
    Cm-CATH2
  • HY-RS08104
    MAPK13 Human Pre-designed siRNA Set A
    		Inhibitor

    MAPK13 Human Pre-designed siRNA Set A contains three designed siRNAs for MAPK13 gene (Human), as well as a negative control, a positive control, and a FAM-labeled negative control.
    MAPK13 Human Pre-designed siRNA Set A
  • HY-181809
    BLT1-IN-1
    		Inhibitor
    BLT1-IN-1 is an orally active and selective BLT1 inhibitor with an IC50 of 8.7 nM and a Kd of 121 nM. BLT1-IN-1 exerts protective effects against acute lung injury and sepsis in in vivo models. BLT1-IN-1 can be used in research related to acute lung injury and sepsis.
    BLT1-IN-1
  • HY-N0660R
    Jujuboside B (Standard)
    		Inhibitor
    Jujuboside B (Standard) is the analytical standard of Jujuboside B. This product is intended for research and analytical applications. Jujuboside B is a bioactive saponin component isolated from Ziziphi Spinosae Semen (sour jujube seed), with oral efficacy and blood-brain barrier permeability. Jujuboside B induces acute leukemia cell death and drives necroptosis apoptosis by activating the RIPK1/RIPK3/MLKL pathway. Jujuboside B upregulates the expression of NOXA, PARP and caspase-3, activates AMPK, inhibits the proliferation of breast cancer cells, and induces cell apoptosis and autophagy. Jujuboside B inhibits angiogenesis and tumor growth by blocking the VEGFR-2 signaling pathway. Jujuboside B alleviates liver injury in mice by regulating the Nrf2-STING signaling pathway. Jujuboside B alleviates liver injury by regulating anti-inflammatory responses and downregulating the expression of 11β-HSD2. Jujuboside B induces ferroptosis and overcomes radioresistance in non-small cell lung cancer via the PPARγ-ATF3-Gpx4 signaling pathway. Jujuboside B exerts inhibitory effects on platelet aggregation. Jujuboside B inhibits febrile seizures by suppressing the activity of AMPA receptors. Jujuboside B reverses chronic unpredictable mild stress-promoted tumor progression by blocking the PI3K/Akt and MAPK/ERK pathways and dephosphorylating CREB signaling. Jujuboside B is applicable to related studies on acute leukemia, breast cancer, PM2.5-induced lung injury, hepatotoxicity, liver injury, colorectal cancer, non-small cell lung cancer, thromboembolic diseases, cardiovascular diseases associated with high platelet aggregation, febrile seizures, and depressive-like phenotypes.
    Jujuboside B (Standard)
  • HY-175236
    SF-9-2
    		Agonist
    SF-9-2 is a PD-L1/PD-1 binding inhibitor (IC50 = 24.9 nM). SF-9-2 inhibits epithelial-mesenchymal transition, migration, invasion, and proliferation of SK-N-SH cells, and also induces apoptosis and cell cycle arrest. SF-9-2 blocks PD-L1-induced SK-N-SH cell growth through the MAPK signaling pathway. SF-9-2 restores GSK-3β activity and enhances PD-L1 degradation through the ubiquitin-proteasome pathway. SF-9-2 inhibits tumor growth in the SK-N-SH NOG mouse model without significant toxicity. SF-9-2 also acts as an immune checkpoint inhibitor, blocking PD-L1 to restore T cell function. SF-9-2 can be used in neuroblastoma research.
    SF-9-2
  • HY-178433
    BChE/p38-α MAPK-IN-2
    		Inhibitor
    BChE/p38-α MAPK-IN-2 is a BChE and p38-α MAPK dual inhibitor. BChE/p38-α MAPK-IN-2 inhibits hBChE with an IC50 of 5.1 nM, showing 1000-fold selectivity over hAChE. BChE/p38-α MAPK-IN-2 inhibits p38α MAPK with an IC50 of 8.12 μM. BChE/p38-α MAPK-IN-2 exhibits neuroprotective effect and can be used for the research of neurological disease, such as Alzheimer’s disease.
    BChE/p38-α MAPK-IN-2
  • HY-P991234
    COVA208
    		Inhibitor
    COVA208 is a bispecific FynomAb (a fusion protein of an antibody and a Fyn SH3-derived binding protein) that targets HER2. COVA208 induces the degradation of HER2, reduces the levels of HER2, HER3, and EGFR, thereby effectively blocking the downstream signaling pathways of HER2, including the HER3-PI3K-AKT and MAPK pathways, and simultaneously inducing apoptosis of tumor cells. COVA208 is promising for research of cancers, such as HER2-positive breast cancer, gastric cancer, and colorectal cancer.
    COVA208
  • HY-178166
    ETI41
    		Inhibitor
    ETI41 is an orally active, selective TLR inhibitor that targets the nucleoside-binding Site I on TLR7 (IC50 = 0.63 μM) and TLR9 (IC50 = 0.16 μM), sparing surface TLRs (including TLR1/TLR2, TLR2/TLR6, TLR4 and TLR5). ETI41 potently inhibits endosomal TLR-mediated pro-inflammatory signaling with nanomolar activity in cellular, biophysical and in vivo assays. ETI41 suppresses the expression of inflammation-associated genes and effectively ameliorates symptoms in mouse models of psoriasis, and systemic lupus erythematosus (SLE). ETI41 can be used for autoimmune and inflammatory diseases research.
    ETI41
  • HY-163880
    EGFR-IN-119
    		Inhibitor
    EGFR-IN-119 (Compound 5l) is an inhibitor for EGFR with an IC50 of 84.3 nM. EGFR-IN-119 inhibits the cytotoxicity in lung cancer cell A549 with an IC50 of 1.34 μM. EGFR-IN-119 downregulates the expressions of EGFR, KRAS, and MAP2K genes, exhibits antioxidant activity through reduction of reactive oxygen species (ROS), and hyperpolarizes the mitochondrial membrane potential.
    EGFR-IN-119
  • HY-142963
    TLR4/NF-κB/MAPK-IN-1
    TLR4/NF-κB/MAPK-IN-1 is a new type of antineuroinflammatory agent by suppressing TLR4/NF-kB/MAPK pathways.
    TLR4/NF-κB/MAPK-IN-1
  • HY-174803
    WMJ-J-09
    		Activator 98.44%
    WMJ-J-09 is an HDAC inhibitor with IC50 values of 7.5 nM (HDAC1), 21.3 nM (HDAC2), 18.4 nM (HDAC3), 90.9 nM (HDAC8), 3.9 nM (HDAC6) and 8715.7 nM (HDAC4). WMJ-J-09 blocks the cell cycle and induces apoptosis in cancer cells. WMJ-J-09 induces cancer cell death through the LKB1-AMPK-p38MAPK-p63-survivin signaling cascade.WMJ-J-09 inhibits HDAC enzyme activity, leading to acetylation of key proteins and thereby regulating cancer cell death. WMJ-J-09 can be used in HCT116 cells and FaDu cells research[1][2].
    WMJ-J-09
  • HY-173344
    DB-10
    DB-10 is a pro-agent of 3-nbutylphthalide (NBP) (HY-B0647). DB-10 has significantly high uptake ability via pyrilamine cationic transporters in the temperature and energy dependent manner in cells. DB-10 improves the survival rate of cells. DB-10 could rapidly convert into active original agent and increase the accumulation in the brain in vivo. DB-10 can be used for ischemic stroke study.
    DB-10
  • HY-P991656
    LY-2624587
    		Activator
    LY-2624587 is a humanized IgG4 monoclonal antibody antagonist targeting CXCR4. LY-2624587 blocks SDF-1/CXCR4 interaction and SDF-1-induced GTP binding. LY-2624587 significantly inhibits cell migration and induces apoptosis in human lymphoma and leukemia cells. LY-2624587 also inhibits CXCR4 and SDF-1 mediated cell signaling including activation of MAPK and AKT. LY-2624587 can be used for human hematological malignancies like acute myeloid leukemia (AML) research.
    LY-2624587
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
p38 MAPK Isoform Comparison

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